Metamath Proof Explorer


Theorem btwnconn1lem10

Description: Lemma for btwnconn1 . Now we establish a congruence that will give us D = d when we compute P = Q later on. (Contributed by Scott Fenton, 8-Oct-2013)

Ref Expression
Assertion btwnconn1lem10 ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → ⟨ 𝑑 , 𝐷 ⟩ Cgr ⟨ 𝑃 , 𝑄 ⟩ )

Proof

Step Hyp Ref Expression
1 simp11 ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → 𝑁 ∈ ℕ )
2 simp2r1 ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) )
3 simp2r3 ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) )
4 simp2l2 ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) )
5 simp31 ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) )
6 simp33 ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) )
7 simp32 ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) )
8 simprlr ( ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) → 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ )
9 8 adantl ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ )
10 1 3 4 2 9 btwncomand ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → 𝐸 Btwn ⟨ 𝑑 , 𝐷 ⟩ )
11 simpr3l ( ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) → 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ )
12 11 ad2antll ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ )
13 btwnconn1lem8 ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → ⟨ 𝑅 , 𝑃 ⟩ Cgr ⟨ 𝐸 , 𝑑 ⟩ )
14 cgrcomlr ( ( 𝑁 ∈ ℕ ∧ ( 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → ( ⟨ 𝑅 , 𝑃 ⟩ Cgr ⟨ 𝐸 , 𝑑 ⟩ ↔ ⟨ 𝑃 , 𝑅 ⟩ Cgr ⟨ 𝑑 , 𝐸 ⟩ ) )
15 1 6 5 3 2 14 syl122anc ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → ( ⟨ 𝑅 , 𝑃 ⟩ Cgr ⟨ 𝐸 , 𝑑 ⟩ ↔ ⟨ 𝑃 , 𝑅 ⟩ Cgr ⟨ 𝑑 , 𝐸 ⟩ ) )
16 cgrcom ( ( 𝑁 ∈ ℕ ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → ( ⟨ 𝑃 , 𝑅 ⟩ Cgr ⟨ 𝑑 , 𝐸 ⟩ ↔ ⟨ 𝑑 , 𝐸 ⟩ Cgr ⟨ 𝑃 , 𝑅 ⟩ ) )
17 1 5 6 2 3 16 syl122anc ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → ( ⟨ 𝑃 , 𝑅 ⟩ Cgr ⟨ 𝑑 , 𝐸 ⟩ ↔ ⟨ 𝑑 , 𝐸 ⟩ Cgr ⟨ 𝑃 , 𝑅 ⟩ ) )
18 15 17 bitrd ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) → ( ⟨ 𝑅 , 𝑃 ⟩ Cgr ⟨ 𝐸 , 𝑑 ⟩ ↔ ⟨ 𝑑 , 𝐸 ⟩ Cgr ⟨ 𝑃 , 𝑅 ⟩ ) )
19 18 adantr ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → ( ⟨ 𝑅 , 𝑃 ⟩ Cgr ⟨ 𝐸 , 𝑑 ⟩ ↔ ⟨ 𝑑 , 𝐸 ⟩ Cgr ⟨ 𝑃 , 𝑅 ⟩ ) )
20 13 19 mpbid ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → ⟨ 𝑑 , 𝐸 ⟩ Cgr ⟨ 𝑃 , 𝑅 ⟩ )
21 btwnconn1lem9 ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝐸 , 𝐷 ⟩ )
22 1 6 7 3 4 21 cgrcomand ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → ⟨ 𝐸 , 𝐷 ⟩ Cgr ⟨ 𝑅 , 𝑄 ⟩ )
23 1 2 3 4 5 6 7 10 12 20 22 cgrextendand ( ( ( ( 𝑁 ∈ ℕ ∧ 𝐴 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐵 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( ( 𝐶 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐷 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑐 ∈ ( 𝔼 ‘ 𝑁 ) ) ∧ ( 𝑑 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑏 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝐸 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( 𝑃 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑄 ∈ ( 𝔼 ‘ 𝑁 ) ∧ 𝑅 ∈ ( 𝔼 ‘ 𝑁 ) ) ) ∧ ( ( ( ( 𝐴𝐵𝐵𝐶𝐶𝑐 ) ∧ ( 𝐵 Btwn ⟨ 𝐴 , 𝐶 ⟩ ∧ 𝐵 Btwn ⟨ 𝐴 , 𝐷 ⟩ ) ) ∧ ( ( 𝐷 Btwn ⟨ 𝐴 , 𝑐 ⟩ ∧ ⟨ 𝐷 , 𝑐 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝐴 , 𝑑 ⟩ ∧ ⟨ 𝐶 , 𝑑 ⟩ Cgr ⟨ 𝐶 , 𝐷 ⟩ ) ) ∧ ( ( 𝑐 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑐 , 𝑏 ⟩ Cgr ⟨ 𝐶 , 𝐵 ⟩ ) ∧ ( 𝑑 Btwn ⟨ 𝐴 , 𝑏 ⟩ ∧ ⟨ 𝑑 , 𝑏 ⟩ Cgr ⟨ 𝐷 , 𝐵 ⟩ ) ) ) ∧ ( ( 𝐸 Btwn ⟨ 𝐶 , 𝑐 ⟩ ∧ 𝐸 Btwn ⟨ 𝐷 , 𝑑 ⟩ ) ∧ ( ( 𝐶 Btwn ⟨ 𝑐 , 𝑃 ⟩ ∧ ⟨ 𝐶 , 𝑃 ⟩ Cgr ⟨ 𝐶 , 𝑑 ⟩ ) ∧ ( 𝐶 Btwn ⟨ 𝑑 , 𝑅 ⟩ ∧ ⟨ 𝐶 , 𝑅 ⟩ Cgr ⟨ 𝐶 , 𝐸 ⟩ ) ∧ ( 𝑅 Btwn ⟨ 𝑃 , 𝑄 ⟩ ∧ ⟨ 𝑅 , 𝑄 ⟩ Cgr ⟨ 𝑅 , 𝑃 ⟩ ) ) ) ) ) → ⟨ 𝑑 , 𝐷 ⟩ Cgr ⟨ 𝑃 , 𝑄 ⟩ )